Pneumatic nailer with single and contact triggering

Abstract

A pneumatic nailer comprises a working piston connected to a driving plunger that is configured for driving in a fastener, a triggering device, and a switching device. The triggering device comprises a manually-operated trigger, a contact sensor, and a force-transmitting device configured to control a control valve. The control valve triggers the driving process in single triggering mode resulting from an actuation of the trigger when the contact sensor is actuated. The switching device has a first position, a second position, and a control piston that is configured to move between the first position and the second position. The switching device is configured to change the force-transmitting device from a contact triggering mode to a contact triggering position. In contact triggering position, the force-transmitting device is configured to control the control valve when the trigger is actuated as a result of the actuation of the contact sensor.

Description

CROSS REFERENCE TO RELATED INVENTION[0001]This application is a national stage application pursuant to 35 U.S.C. § 371 of International Application No. PCT / EP2017 / 063658, filed on Jun. 6, 2017, which claims priority to, and benefit of, European Patent Application No. 16 174 539.3, filed Jun. 15, 2016, the entire contents of which are hereby incorporated by reference.BACKGROUND[0002]The invention relates to a pneumatic nailer with a working piston which is connected to a driving plunger for driving in a fastener, and which is contacted by compressed air when a driving process is triggered, with a triggering device that has a manually-operated trigger, a contact sensor, and a force-transmitting device which controls a control valve that triggers a driving process in single triggering mode resulting from an actuation of the trigger when the contact sensor is actuated.[0003]The contact sensor is a mechanical component which is usually held by a spring in a position projecting beyond an ...

AI Technical Summary

Benefits of technology

The pneumatic nailer is designed to be safe and efficient. It only has one triggering mode and requires a special switching device to activate the contact triggering mode. The pneumatic connection between the control valve and the control volume is minimal, which reduces the consumption of compressed air and saves installation space. Overall, this design improves the performance and reliability of the pneumatic nailer.

Problems solved by technology

In certain situations, there is an increased risk of injury associated with the contact triggering method.

For example, accidents can occur when a user (while not observing important safety guidelines) climbs a ladder with the pneumatic nailer while pulling the trigger, and the contact sensor accidentally brushes against his leg.

However, the above-outlined risk of injury still exists.

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